import { constantRoutes } from '@/router'
import { getRouters } from '@/api/vadmin/menu'
import Layout from '../../layout/index.vue'
import ParentView from '@/components/ParentView';
import { handleTree } from "@/utils/ruoyi";
import { slice } from 'lodash';
import store from '@/store'
import router from '@/router'
import api from '@/utils/api' // 导入API工具
import { log } from '@/config' // 导入安全的日志函数
import { validateRouteRole } from '@/utils/multiUserConflict' // 导入多用户冲突处理工具
// import de from 'element-ui/src/locale/lang/de'

const permission = {
    state: {
        routes: [],
        addRoutes: [],
        sidebarRouters: [],
        // routesList:[]
    },
    mutations: {
        SET_ROUTES: (state, routes) => {
            state.addRoutes = routes
            state.routes = constantRoutes.concat(routes)
        },
        SET_SIDEBAR_ROUTERS: (state, routers) => {
            state.sidebarRouters = constantRoutes.concat(routers)
        },
    },
    actions: {
        // 生成路由
        GenerateRoutes({ commit }) {
            return new Promise(resolve => {
                // 向后端请求路由数据
                getRouters().then(res => {
                    // 验证并清理无效的角色信息
                    validateRouteRole(res.results);

                    // 安全获取当前角色ID
                    let currentRoleId = null;
                    try {
                        const curRoleStr = sessionStorage.getItem('cur_role');
                        if (curRoleStr) {
                            const curRole = JSON.parse(curRoleStr);
                            currentRoleId = curRole && curRole.id;
                        }
                    } catch (err) {
                        log.error("解析cur_role出错:", err);
                    }
                    
                    if (process.env.NODE_ENV === 'development') {
                        log.info("当前角色ID", currentRoleId);
                        log.info("所有权限路由", res.results);
                    }
                 
                    const menus = res.results.filter(item => {
                        // 首先检查是否有当前角色ID
                        if (currentRoleId) {
                            if (item.role.id == currentRoleId) { 
                                return true;
                            }
                        } else {
                            // 尝试从store获取角色ID
                            const storeRoleId = store.getters.cur_role && store.getters.cur_role.id;
                            if (process.env.NODE_ENV === 'development') {
                                log.info("从store获取的角色ID", storeRoleId);
                            }
                            if (storeRoleId && item.role.id == storeRoleId) { 
                                return true; 
                            }
                        }
                        return false;
                    });
                    
                    if (process.env.NODE_ENV === 'development') {
                        log.info("菜单过滤结果", menus);
                    }
                    
                    // 确保有菜单结果
                    if (!menus || menus.length === 0) {
                        log.error("未找到当前用户的菜单权限");
                        resolve([]);
                        return;
                    }
                    
                    store.dispatch('changePer',menus[0].permissions)
                    const data = handleTree(menus[0].menus, "id");
                    const sdata = JSON.parse(JSON.stringify(data))
                    const rdata = JSON.parse(JSON.stringify(data))
                    const sidebarRoutes = filterAsyncRouter(sdata)
                    const rewriteRoutes = filterAsyncRouter(rdata, false, true)
                    router.addRoutes(sidebarRoutes) // 动态添加可访问路由表
                    rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
                    commit('SET_ROUTES', rewriteRoutes)
                    commit('SET_SIDEBAR_ROUTERS', sidebarRoutes)
                    if (process.env.NODE_ENV === 'development') {
                        log.info("权限列表", store.getters.permissions);
                    }
                    resolve(rewriteRoutes)
                }).catch(error => {
                    log.error("获取路由失败:", error);
                    resolve([]);
                })
            })
        }
    }
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, type = false) {

    return asyncRouterMap.filter(route => {

        if (type && route.children) {
            route.children = filterChildren(route.children)
        }
        if (route.component) {
            // Layout ParentView 组件特殊处理
            if (route.component === 'Layout') {
                route.component = Layout
            } else if (route.component === 'ParentView') {
                route.component = ParentView
            } else if (typeof route.component === "string" && route.component === 'Layout/index' && !route.children) { // 首页定制
                route.meta.affix = true
                route.children = [{
                    path: 'index',
                    component: 'index',
                    name: route.name,
                    meta: route.meta
                }]
                route.path = ''
                route.name = ''
                route.redirect = '/index'
                route.alwaysShow = false
                route.component = Layout
            } else {
                route.component = loadView(route.component)
            }
        }
        if (route.children != null && route.children && route.children.length) {
            route.children = filterAsyncRouter(route.children, route, type)
            if (route.children.length === 1 && route.children[0].path === 'index') {
                route.alwaysShow = true
            } else {
                route.alwaysShow = false
            }
        } else {
            delete route['children']
            delete route['redirect']
        }
        return true
    })
}

function filterChildren(childrenMap, lastRouter = false) {
    var children = []
    childrenMap.forEach((el) => {
        if (el.children && el.children.length) {
            if (el.component === 'ParentView') {
                el.children.forEach(c => {
                    c.path = el.path + '/' + c.path
                    if (c.children && c.children.length) {
                        children = children.concat(filterChildren(c.children, c))
                        return
                    }
                    children.push(c)
                })
                return
            }
        }
        if (lastRouter) {
            el.path = lastRouter.path + '/' + el.path
        }
        children = children.concat(el)
    })
    return children
}

export const loadView = (view) => { // 路由懒加载
    return (resolve) => require([`@/views/${view}`], resolve)
}

export default permission